12"w X 24"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum margin-right: 12px

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We carry sizes the big box stores don't

Design – Rigid gauge built for durability and long life in mind

+ Product Details Size – 4"w X 12"h is the size for the duct opening measurement only

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12"w X 24"h Aluminum Adjustable Return/Supply HVAC Air Grille Material_Aluminum margin-right: 12px+ Product Details Size 12"w X 24"h is the size for the duct opening measurement only, actual front end outer dimensions are approximately 13. 85" width X 25. 85" height. High Quality Rigid aluminum construction with counter sunk screw holes (screws included) and no sharp edges. Installation Location Sidewall and ceiling. Design Unrestricted airflow for your HVAC system adjustable one way louver with full horizontal airflow directional control single